Install gri-el by entering the following commands in the terminal:
sudo apt update sudo apt install gri-el
Description:
Emacs major-mode for gri, a language for scientific graphics
Gri is an open-source language for scientific graphics programming. . This is the Emacs major-mode for gri.
Homepage: http://gri.sourceforge.net/
Version: 2.12.26-1build1
Section: universe/science